Passage
`Thus said Jehovah of Hosts, God of Israel, to all the removal that I removed from Jerusalem to Babylon,
`Thus said Jehovah of Hosts, God of Israel, to all the removal that I removed from Jerusalem to Babylon,
Jeremiah 29:2 After the going forth of Jeconiah the king, and the mistress, and the officers, heads of Judah and Jerusalem, and the artificer, and the smith, from Jerusalem--
Jeremiah 29:3 By the hand of Eleasah son of Shaphan, and Gemariah son of Hilkijah, whom Zedekiah king of Judah sent unto Nebuchadnezzar king of Babylon--to Babylon, saying,
Jeremiah 29:4 `Thus said Jehovah of Hosts, God of Israel, to all the removal that I removed from Jerusalem to Babylon,
Jeremiah 29:5 Build ye houses, and abide; and plant ye gardens, and eat their fruit;
Jeremiah 29:6 Take ye wives, and beget sons and daughters; and take for your sons wives, and your daughters give to husbands, and they bear sons and daughters; and multiply there, and ye are not few;
The verse centers on "thus", "said", "jehovah", "hosts", "israel", "removal", "removed", and "jerusalem". It is saying that the verse draws attention to "thus" and "said", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 3's "By the hand of Eleasah son of..." into verse 5's "Build ye houses and abide and plant...", so "thus" and "said" belong inside that flow. In Jeremiah context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "thus" and "said" with trust shaped by these words, not by a vague optimism outside the passage.